The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Largest lake in Great Britain measured by surface area.

One of two Irish-style round towers in Scotland, this structure has mysterious origins.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

This massive monument honors the first human in space.

This newly renovated Soviet-era outdoor exhibition center is bigger than the principality of Monaco.

Gargantuan home of Russian science.

One of the world's tallest statues is also one of its most hated.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

These disused steel furnaces are now haunting ruins that may one day be a national park.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The last street in Pittsburgh that's paved with wood.

This Old Testament garden features 100 plants from biblical times.